... 2)Grade : AISI 201, AISI 202, AISI 304, AISI 304L, AISI 316, AISI 316L 3) Standard : ASTM A55 SUS ... 304L Stainless Steel Tube:The Roundness is very accurate;The ... : ASTM A554MaterialGrade : AISI 201, AISI 202, AISI 304, AISI 304L, AISI 316, AISI 316L.SpecificationRonnd Pipe:OD range from 6mm ... bags and outer package by steel boxes. : SUS 304L Stainless Steel Tube